seymour



(No Model.) 6 sheets sheet 1. C. SEYMOUR. MORTISING MACHINE.

No. 495,209. Patented Apr. 11, 1893.

(No Model.) 6 Sheets-Sheet 4.

G. SEYMOUR. MORTISING MACHINE.

Patented Apr. 11, 1893.

(No Model.) 6 Sheets-Sheet 5. O. SEYMOUR. MORTISING MACHINE.

'No 495,209. Patented Apr. 11, 189311.;

(No Modl.) 6 Sheets-Sheet 6.

G. SEYMOUR. MORTISING MACHINE.

No. 495,209 Patented Apr. 11, 1893.

UNITED STATES- PATENT @uurcn.

CHARLES SEYMOUR, OF DEFIANOE, OHIO, ASSIGNOR TO THE DEFIANGE MACHINEWORKS, OF SAME PLACE.

MORTISING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 495,209, dated April 11, 1893.

Application filed February 25. 1892. $erial No. 422.812. (N0 model.)

To all whom it may concern.-

Be it known that 1, CHARLES SEYMOUR, a citizen of Defiance, in thecounty of Defiance and State of Ohio, have invented certain new and'useful Improvements in Mortising-Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in mortising machines and moreparticularly to that class of such machines known as double-chiselmortisers.

The object of the invention is to provide a mortising machine withdevices, whereby said machine will be adapted to general carpentersuses.

With this object in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts ashereinafter set forth and pointed out in the claims.

In the accompanying drawings: Figure 1 is a front elevation of myimproved machine. Fig. 2 is a left hand side elevation. Fig. 3 is aright hand side elevation showing the boring device attached to theframe of the machine. Fig. 4 is an enlarged sectional view of the boringattachment. Fig. 5 is a plan view of the devices shown in-Fig. 4:. Fig.6 is an elevation of the parts for separating the chisels to produce thedesired width of mortise. Fig. 7 is a view of-a modification. Figs. 8, 9and 10 are detail views.

A represents a frame, in the top of which a shaft A, having two crankarms a, a, is mounted and adapted to impart a reciprocating motion, bymeans of pitmen B, B, to chisel bars 0, O, which latter are held inposition by means of guides c, c, c, 0, upon the bed plates F, F. Thepitmen B, B are attached to the chisel bars 0, O by means of wrists d,cl, in which the chisel bars are held are flanged plates d which embraceand slide on flanged plates (2' secured to the guides c, o, and thusguide the chisel bars 0, C, in their vertical movement. The bed platesF, F are adjustably pivoted to the bed plate Q at e and have a pendulousmovement on said pivots, which. is controlled by the parting mechanismhereinafter described. The bed plate Q is firmly but adjustably boltedto the frame of the machine by means of bolt 8, passing throughelongated slot 8 in the bed plate and into the casing, and a bolt .9passing through the bed plate at a point between its 'ends' and into theframe A. WVhen it is desired to mortise at an angle to theperpendicular, the bolts 3 will be slackeued and the bed platepermittedto have an oscillatory movement on the bolt 8 as a pivot.

Attached to the lower ends of the chisel bars C, O are heads D, D, towhich the chisels i are secured in socket-s E E. These sockets arepreferably circular in cross section, with their axes parallel but notcoinci dent with the axes of the chisel bars, as shown in Fig. 8.

A guide block f is adjustably secured in each head D, D, by means ofscrews f passing through lateral slots f said guide blocks beingprovided with flanges f which slide between guide plates f secured tothe bed plate Q. By this means the chisels can be adjusted in theirrelative positions to each other by turning the chisel bars.

To the shaft A a disk 1 of a frictional clutch, is keyed,and on saidshaft A in proximity to the disk a pulley 2 is mounted, to which motionis imparted by means of abelt from any convenient and suitable source ofpower. The pulley 2 is provided with an annular flange or enlargement 3at one edge, which is adapted to engage one face of the disk 1 and thusimpart motion thereto, which motion will be transmitted, through themedium of the crank arms a, a, to the chisel bars 0, 0'. Another pulley4 is mounted loosely on the shaft A and adapted to have motion from thepulley 2, imparted to it through the medium of the clutch 5. Attached tothe sleeve of the clutch 5 is a yoke 6, to which a lever 7 is attached,the lower end of said lever having sliding connection with a slottedplate 8 secured to the frame A, of the machine. Oonnected to the lowerend of the lever 7 is a short link 9, the outer end of which ispivotally connected to the short arm of a IOO so that when no pressureis applied to thetreadle, the weighted rod or spring will tend to forcethe clutch 5 into contact with the. pulley 4, through the medium of thebell-' crank-lever 10, lever 7 and yoke 6, and thus impart motion to aboring attachment .hereinafter described. When the foot treadle 12 ispressed the flange 3 of pulley 2 will be. thrown into frictional contactwith the disk 1 and motion imparted tothe chisels. A lever 14 is pivotedat or near its upper end to the frame of the machine or a bracket thereon, and is provided at its upper end, above its fulcrum, with a brake 15designed, by contact with the face of the disk 1 to arrest the motion ofthe shaft A and thus stop the operation of the chisels. The levers 7 and14 may be connected by a link 16, in which case both levers will beoperated simultaneously.

By unlocking this link connection,th e levers I may be actuatedindependently of each other as occasion may require.

In Fig. 6 the devices for spreading the chisels apart, while in theperformance of mortising, is represented in detail. Pivoted at. 70 is abell-crank-lever G, with which a crank H, carried by a shaft 34, isadapted'to engage and actuate. The bell-crank-lever G is made with anelongated slot G, lHVVhlOll a pin G2 carried by a rod G is adapted tohave -.a sliding movement, said rod G being adjustably pivoted at itsupper end to a bell crank lever D ofa compound lever Y, which serves toactuate the parting mechanism of the chisel bars 0, 0. machine, thechisel bars (the direction of motion of which is convergent) begin tocut the mortise from opposite sides of the hole previously bored in thematerial, and are made to diverge gradually so as toobtain the properlength of mortise; jjTh-is spreading or diverging of the chisel barsduring their operation is, produced by the lever Y, which, as abovedescribed, is actuated by the bell crank lever G. TheleverY consists ofthree parts D H and H. The link H is pivoted at t to the bell crank Dwhile itsother end, which passes behind the plate Q, carries a pin '2),which passes through a hollow stud R and has secured to its front end across bar E to the ends of which are pivotally secured the links J, E,which also are pivot-ally connected to the plates F, F. The link H isadjustably pivoted at u'to the bell-crank D while its other end ispivoted to the frame directly back of the stud R, which is the pivotalpoint of the link 11. It will be seen that if the bell-crank-lever G isactuated by the crank cross bar E upon its pivot R, and by means In theoperation of the I of the links E, E force the lower ends of thependulous bed-plates F, F apart, the chisel bars partaking of the samemotion. After the crank H parts its contact with the bellcrank G theparts above named will assume their original positions. A. bumper z islocated on the base of the machine, and is provided with a rubber 2', totake the strain off of the bell crank lever G when the latter falls.

The machine is provided with a table 18 which supports a removable chuckor clamp 18 for holding the material to be operated upon. The table 18is provided in its under face with a dove-tail groove 19 for thereception of a similarly shaped bed 20. The bed plate 20 terminates in aperpendicular portion or standard 21, which is adjustably secured .to ablock 22, by means of a screw 23, so that the height of the table may beregulated to suit different thicknesses of material to be'operated upon.The block 22 is secured to or made integral with an upright portion 23having an arm 24 projecting at right angles to the top thereof, .saidupright portion 23 being adapted to have a sliding vertical movement onguides on the main frame A. A series-of screws 25 is passed through theblock 22 and arm 24 and adapted to bear at their upper ends against thebottom of the table bed 20. The screws 25 are provided at their lowerends with bevel piniens 26 which mesh with bevel pinions .27 mounted ona shaft 28, on the end of which an operating wheel 29 isvsecured. Byfirst loosening the screw 23 and then operating the wheel 29, the screws25 willbe forced against the under side of the table bed20 and move thebed and parts-carried thereby upwardly for the purpose of adjusting thetable to suit the thickness of the material to be acted upon. A shaft 30is mounted in the upper end of the standard 21 of the bed 20, said shaftbeing provided at its outer end with a wheel 31 and at its inner endwit-h a pinion v32, adapted to mesh with a rack bar 33 secured to theunder face of the table 18,-whereby said table may be movedlongitudinally.

Keyed to the rear end of the shaft A is a pinion 35, which meshes with agear Wheel 36 carried by a shaft 37. A cone pulley 37 is mounted on theshaft 37, over which a strap or belt passes to transmit motion to a conepulley 38 carried bya shaft 39 mounted in the lower part of the mainframe A. The shaft 39 also carries a pinion 40, which meshes with a gearwheel 41 carried by a shaft 42, which latter is mounted in the frameAbelow the shaft 39. The shaft 42 is mounted in bearings 43, 44 and onits front end a cam 45 is keyed. Interposed between the cam 45 and thesubstructure of the table is afriction roll er 46, with which the cam 45engages, whereby the automatic raising and lowering of the table duringthe operation of the machine, will be accomplished.

In operating upon heavy timber, such as car sills and the like, in whichthe weight and provided with a cam 51 adapted to engage a roller 52carried in a bracket 52 secured to the part 47,-thusimparting a verticalrecip rocation to the said part 47. The shaft projects at one end beyondthe frame A and is journaled at its outer end in a sleeve 53 and in theupper end of a bracket 52 projecting from the main frame A. The'shaft 50carries a gear wheel54, which meshes with a pinion 55 carried by a shortshaft 56,'whic h latter is mounted in the bracket-52 and carries a conepulley 57, over which a belt (not shown) is adapted to run and thustransmit motion, through the medium of the gearing above described, tothe part 47.

As a mortise cannot be made in hard wood without previously boring ahole, a boring device is practically indispensible, and to thor-' oughlyequip the machine to meet such cases, I provide a boring attachment asshown in Figs. 3, 4 and 5. A bracket is secured to the main frame A andembraces a sleeve 61, being made to securely hold said'sleeve by meansof a bolt 62 passing through lugs 63 projecting from the parts 68: ofthe bracket. The parts or jaws 63 of the bracket are so constructed thatby loosening the bolt 62 the sleeve 61 can be turned, for a purposepresently explained. One end of the sleeve 61 terminates in a boxing 64,fromthe top and bottom of which sleeves 65, 66 project. Mounted in thesleeve 61 is'a shaft 67, on one end of which a pulley 68 is secured andadapted to receive motion from the pulley4 by means of a strap notshown. The end of the shaft 67 within the boxing 64 is provided with abevel pinion 69, which meshes with a pinion 68" secured to a bushing 69passing through the box 64 and sleeves 65, 66. The bushing is preventedfrom vertical movement by means of flanges or shoulders 71, 71. A shaftor spindle 72 passes through the bushing 69 and' is connected to rotatetherewith by means of a spline or feather or in any othersuitablemanner. To the lower end of the shaft or spindle 72 a head 73 issecured, for the reception of a drill or boring tool 75. An arm 76 isloosely connected with the upper end of the shaft or spindle 72 so asnot to prevent the rotation of said shaft and projects laterally fromsaid shaft or spindle. To the outer end of the arm 76 a rod 77 issecured, said rod passing loosely through arms 7 8, 7 9,'projecting fromsleeves 65,66. A handle 80 is connected to the rod 77, whereby theboring tool can be properly fed downwardly. It will be seen that byloosening the bolt 62, the boring spindle can be inclined to right orleft and a hole bored to meet the requirements of a mortisc made at anangle to the perpendicular.

Passing through the arm 76 is a bar 81, a similar bar 82 also passingthrough the arm 78. Secured at their respective ends to the bars 81 and82, is a series (preferably two, as shown in Fig. 1) of spiral, bowedsprings 83, which serve to balance the weight of the boring attachmentand its adjuncts. I

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- v 1. In a mortising machine, thecombination with reciprocating chisels and means for operating the same,of a table bed having a depending standard, a block to which saidstandard is adj ustably connected, said block and parts connectedthereto, being adapted to slide on vertical ways on the main frame ofthe machine, screws passing through said block and adapted to bear onthe table bed, bevelpinions on the lower ends of said screws,ahorizontal shaft, bevel pinions on said shaft adapted to mesh with thepinions on the screws, means for operating said shaft, a table mountedto slide on the table bed, a rack bar carried by the table and a pinionmeshing with said rack bar, said pinion beingprovided with means foroperating it, and means for automatically reciprocating the table andthe parts which carry it, during the operating of the machine. v 7 y 2.The combination with a frame and morframe, aborin g spindle carried bysaid bracket, an arm pro ecting from said spindle, a bar passing throughsaid arm, an arm projecting from the bracket, a bar passing through themeshing with the gear WheeLanda vertically adjustable table,substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES SEYMOUR. WVitnesses:

GEO. W. DEATRIOH,

MAY E. FISHER.

tising devices, of a bracket secured to said 4 IIO

